When I run phpcbf with stdin, the exit code is "1" instead of 0

[yaegassy]

Describe the bug

In the case of stdin, the exit code always seems to be 1.

Is this behavior a bug?

Code sample

<?php

function dummy() {
    return "dummy";
}

Custom ruleset

None

To reproduce

$ phpcbf --version
PHP_CodeSniffer version 3.6.0 (stable) by Squiz (http://www.squiz.net)
$ cat sample.php
<?php
function dummy() {
    return "dummy";
}
$ cat sample.php | phpcbf
<?php

function dummy()
{
    return "dummy";
}
$ echo $?
1

[jrfnl]

Duplicate of #1359, #2954, #3057. Also see #1818 (comment), This is on the roadmap for PHPCS 4.0 as per #2898.

[yaegassy]

Thanks reply. This seems to be a duplicate issue, so I will close my issue.